Upholstery-spring-attaching device.



UPH LS Ea;

PLI

VIS.

- ATTAOHING DEVICE.

D JULY10,1911.

Patented Oct. 1, 1912.

" UNITED PATENT OFFICE.

JAMES A. DM'TIS. "or AMESBURY, MASSACHUSETTS, 'Assmnon, BY MESNE ASSIGN- MENTS, To THE CHARLES WING COMPANY, or AMESBURY, MASSACHUSETTS, A

"CO'BPORATIONOF MASSACHUSETTS;

UPIHOLSTERY-SPBING-ATTBGHING DEVICE.

Specification of Letters 'la'ten't. Application filed July 10, 1911. Serial no. 637,602.

Patented Oct. 1,1912.

of Massachusetts, have invented a certain new and useful Improvement in Upholstery- Spring-Attaching Devices, of which the following isa specification, reference being had therein to the accompanying drawings. H

The invention provides for attaching the springs which are employed in the u hol-. stery of automobiles, etc, to the bac 'ngs. on which such springs are assembled preliminary to being embodied in such upholstery.

As more particularly contemplated by me, the invention is utilized in attaching a series of double cone springs to a flexible sheet, composed of paste-board, strawboard, or the like, which is bent into the required shape and attached within the framing of the back and sides of an automobile seat.

The invention is not limited to usein connection with automobiles, for it is applicable in the case of other vehicles, and also in connection with furniture.

The invention consists, essentially, in the combination with a supporting sheet for carrying wire springs such as aforesaid, of a plurality of attaching devices formed of sheet metal, each having a broad fiat base, and a pointed tongue struck up from the said base, said tongue being passed through the flexible support (of paper material or the like) from the reverse side of the latter and bent around the base-portion of the wire of the spring. The said attaching devices are disposed opposite each other, or otherwise, to effect the secure attachment of each spring.

In the drawings, Figure 1 shows a portion of a flexible spring supporting sheet, a plurality of springs applied thereto, and attaching devices embodying the invention. Fig.2is a partly sectional View of a portion of the said sheet, one of the said springs, and attaching devices such as aforesaid in connection with the said sheet and spring. Fig. 3 is a perspective view of one of the attaching devices of. Figs. 1 and 2, shown separately. Fig. 4 is a view of the said attaching device in cross-section.

Having reference to the drawings, the supporting sheet [is designated 1, and the coiled wire springs applied thereto are marked -2,='2,-etc.

the form shown in the drawings the attachingdevice is made of a circular disk, 3, constituting the base thereof, having .a

substantially V-shaped tongue, 4, struck up .1;

from the central portion thereof, although the shape of the piece ofsheet metal, and the form of its tongue, may be varied, and

.insome cases two or more tongues may be formed. The tongue being broad and flat, it holds the base-portion of the wire of the spring 2 firmly and steadily in place, operating to prevent movement or play of the spring'upon the flexible backing sheet 1.

The device constitutes a secure, strong attachment which is free from the drawbacks and disadvantages of .the cord or string which heretofore has been employed for attaching springs to the backings in the like connections. The bending and other Strains to which springs in use are subjected operate to occasion movement of the.

springs which, in the caseof the attaching cords heretofore employed, soon loosens, frays, and cuts or breaks the said cords, so that the springs become loose from their attachment, or are held with less etficiency.

My invention enables the work of attaching a series of springs to the flexible backing or carrier therefor to be effected in an exceedingly small fraction of the time which ordinarily has been required for stitching the springs to the said carriers by cord or twine. The latter method of attachment ordinarily requires about forty minutes for the attachment of eighteen springs, the work being performed by hand. I- employ in practice a board or other holder having shallow sockets in which I place the base-portions of a series of attaching devices, with the points of the tongues extending upward. The sockets in the said board are disposed in proper positions with relation to the location of the springs and the contemplated location of the attaching devices in connection with each spring. A sheet of papermaterial then is pressed by hand or otherwise down upon the series of projecting points, which pierce the sheet and extend above its? upper surface. Then the springs are placed in osition, and the points of the attaching hammer orother device upon the base-portions of the Wires of the'springs. As will be obvious, the characterofthe devicefen ders the use 0f eutomatic" mechanism forbending or clenching the points entirely feasiblet.

Preferably, the attachin device *has a flat base-portion of considerahle size so as to back up. and reinforce thesheet of paper material. Consequently, the said device is prevented from tearing through the paper sheet as it might if onlyenarrowstrip were employed, A, veluzible cheracteristic portion extending in both"directions; out sideof the tongue so astoprovide forthe reinforcement ;of they sheet of" paper-mm terial. 'Y ,f

evices-ere ben't, overfbyg a" I claim as my invention e The combination with a supporting sheet and 'a; coiled-wire sprin of a, pluralit o attaching devices forme of sheet-metal av- 1 ing a broad flat base and a pointed tongue struck up therefrom; vsaid tongue passed through'the said sheet from the reverse side of the latter and bent around the base-portion of thewire of the spring, the tongues of the respective attaching devices engaging with-ercoil of the said spring at two or more ,points, and attaching the spring securely to said supporting sheet.

In testimony whereof I afiix my signetture inpresence of two-witnesses. of theettaching'device is thisi b'rQadihase s Y g 'JAMES A. DAVIS. E Witnesses: i 1 i 1 CBIAS; F. RANDALL, Y Y, NATHAN B. D Y} 

